本章课前案例通过“城市居民知识内容付费意愿调查”确定调查对象，并对调查对象的群体划分以及群体特征等分类确定问卷发放数量，并通过网络电子问卷和纸质问卷等途径向社区居民和在校大学生发放并回收问卷，，帮助同学们掌握问卷发放数量的确定，问卷发放的对象及流程设计流程以及基本途径等，提升实施问卷调查的实践技能。

Pre Class Case

The pre class case in this chapter uses the "Survey of urban residents' willingness to pay for  knowledge content" to determine the survey object, and classifies the group division and group characteristics of the survey object to determine the number of questionnaires distributed. It also distributes and retrieves questionnaires to community residents and college students through online electronic questionnaires and paper questionnaires, to help students master the determination of the number of questionnaires distributed, The object of questionnaire distribution, process design process, and basic approaches to improve practical skills in implementing questionnaire surveys.